0g-chain/x/cdp/keeper/params.go
Kevin Davis 22dc15f757
Apply debt floor to repayments (#314)
* fix: remove redundant debt limit param

* wip: test pricefeed genesis

* fix: pricefeed querier

* fix: comments, naming

* fix: query path

* fix: store methods

* fix: query methods

* feat: Liquidation Penalty

* feat: enforce debt floor on repayment

* address review comments

* fix: remove debt from liquidation penalty

* test: remove payment > balance check

* feat: handle overpayment

* fix: avoid negative coins error for overpayments
2020-01-22 16:50:27 +00:00

97 lines
2.5 KiB
Go

package keeper
import (
"fmt"
sdk "github.com/cosmos/cosmos-sdk/types"
"github.com/kava-labs/kava/x/cdp/types"
)
// GetParams returns the params from the store
func (k Keeper) GetParams(ctx sdk.Context) types.Params {
var p types.Params
k.paramSubspace.GetParamSet(ctx, &p)
return p
}
// SetParams sets params on the store
func (k Keeper) SetParams(ctx sdk.Context, params types.Params) {
k.paramSubspace.SetParamSet(ctx, &params)
}
// GetCollateral returns the collateral param with corresponding denom
func (k Keeper) GetCollateral(ctx sdk.Context, denom string) (types.CollateralParam, bool) {
params := k.GetParams(ctx)
for _, cp := range params.CollateralParams {
if cp.Denom == denom {
return cp, true
}
}
return types.CollateralParam{}, false
}
// GetDebtParam returns the debt param with matching denom
func (k Keeper) GetDebtParam(ctx sdk.Context, denom string) (types.DebtParam, bool) {
params := k.GetParams(ctx)
for _, dp := range params.DebtParams {
if dp.Denom == denom {
return dp, true
}
}
return types.DebtParam{}, false
}
// GetDenomPrefix returns the prefix of the matching denom
func (k Keeper) GetDenomPrefix(ctx sdk.Context, denom string) (byte, bool) {
params := k.GetParams(ctx)
for _, cp := range params.CollateralParams {
if cp.Denom == denom {
return cp.Prefix, true
}
}
return 0x00, false
}
// private methods assume collateral has been validated, panic if the input is invalid
func (k Keeper) getDenomFromByte(ctx sdk.Context, db byte) string {
params := k.GetParams(ctx)
for _, cp := range params.CollateralParams {
if cp.Prefix == db {
return cp.Denom
}
}
panic(fmt.Sprintf("no collateral denom with prefix %b", db))
}
func (k Keeper) getMarketID(ctx sdk.Context, denom string) string {
cp, found := k.GetCollateral(ctx, denom)
if !found {
panic(fmt.Sprintf("collateral not found: %s", denom))
}
return cp.MarketID
}
func (k Keeper) getLiquidationRatio(ctx sdk.Context, denom string) sdk.Dec {
cp, found := k.GetCollateral(ctx, denom)
if !found {
panic(fmt.Sprintf("collateral not found: %s", denom))
}
return cp.LiquidationRatio
}
func (k Keeper) getLiquidationPenalty(ctx sdk.Context, denom string) sdk.Dec {
cp, found := k.GetCollateral(ctx, denom)
if !found {
panic(fmt.Sprintf("collateral not found: %s", denom))
}
return cp.LiquidationPenalty
}
func (k Keeper) getAuctionSize(ctx sdk.Context, denom string) sdk.Int {
cp, found := k.GetCollateral(ctx, denom)
if !found {
panic(fmt.Sprintf("collateral not found: %s", denom))
}
return cp.AuctionSize
}